Compressed-air-exhaust muffler.



E. EGAN.

COMPRESSED AIR EXHAUST MUFFLER.

APPLICATION FILED JUNE 16, I914.

Patented Feb. 8, 1916.

Wu 11 comm EUGENE EGAN, OF' KINGSTON, NEW YORK.

COMPRESSED-AIRPIEXHAUST MUFFLER.

Specification of Letters Patent.

Application filed- June 16, 1914. Serial No. 345,453.

1 0 all whom it may concern:

Be it known that I, EUGENE EGAN, a citizen of the United States, residing at Kings.

ton, in the county of Ulster, State of New York, have invented certain new and useful Improvements in Compressed-Air-Exhaust Mufilers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to compressed air devices, particularly to the exhaust therefor, and has for its object the provision of a mufller for the exhaust, whereby the objectionable noise caused by the passage of the air from the exhaust is eliminated.

An important object is the provision of a device of this character which is so constructed as not to cause back pressure and retard the movement of the compressed air operated device. 7 v

A further object is the provision of a device of this character, so constructed that the exhaust air is deflected and v divided into separate streams which are converged to construction and arrangement of parts to be hereinafter more fully described and claimed, and illustrated in-the accompanying drawing, in which Flgure 1 1s a partlal sectional VIEW through my device applied to the exhaust pipe of a compressed air operated mechanism, Fig. 2 is a complete longitudinal sectional view therethrough taken at right angles to Fig. 1, Fig. 3 is an end view, and Fig. 4 is a transverse sectional view on the line 44 of Fig. 2.

Referring more particularly to the drawing, the numeral 5 designates a pipe which may be the exhaust from a' compressed air drill, hammer, or any other similar device.

' My novel mufller is designated as a whole by the numeral 6 and comprises a frustoconical shell 7 having the interior wall of its smaller end screwthreaded for engagement upon the screwthreaded end of the pipe 5 and terminating at its larger and forward end in an inwardly directed annular flange 8.

Secured within the shell 7 and spaced from the sides thereof by means of a transverse strip 9 having lateral extensions 10 secured upon the shell, is a deflecting member 11 Patented Feb. 8, 1916.

formed as a conical shell having its apex disposed toward theend of the pipe 5.

When. air exhausting from the pipe 5 enters the shell 7, it will be divided upon contact with the apex of the deflector 11- and-will pass therearound toward the front end of the shell. Upon reaching the forward end of the deflector 11, the air will be divided into two separate streams by the strip 9. As each stream then rushes forward, it will impinge against the annular flange 8 and will be consequently directed inwardly toward the center of the wall as shown by the arrows in Fig. 2. As these two streams strike each other,the velocity of each stream will counteract the other thereby allowing the air to exhaust gently and noiselessly from the device.

It will thus be observed that I have provided a simple device by means of which the exhaust air from a compressed air operated apparatus may be allowed to escape into the atmosphere unaccompanied by the usual disagreeable and objectionable noise.

Itwill bereadily understood that I re serve the right to make such changes in the details of construction of my device as will not depart from the spirit of the. invention, the principle of its operation or the scope of the subjoined claim.

Having thus described my invention, I claim:

A muffler forcompressed fluid exhausts comprising a casing having one end taperingly enlarged and .provided at said end with an inwardly extending annular flange I which bounds a discharge opening of a size not less than the inlet at the other endof the casing, and a deflecting member substantially conical in shape disposed in said tapered end of the casing and having its base of substantially the size of the discharge opening. 7

In testimony whereof I aflix my signature, in the presence of two witnesses.

EUGENE EGAN. lVitnesses: v 1- DOMINIGK NOONAN. JAMES CULLUM,

Copies of this patent maybe obtained for five cents each, by addressing the Commissioner of Patents, Washington, .D. G. 

